RPRF fees request

hello my name is navya shah and i had a work permit in canada from 2017 to 2019 and on may 24th i submitted my express entry file after i got ITA. i didnt paid the 490 $ rprs fees at once and i only paid $590. now on june 25th they asked from me $490 RPRF fees. what does that mean .? in how mnay days i will get PPR request.?